US4413841A - Safety seat belt arrangement for automotive seat occupant - Google Patents

Safety seat belt arrangement for automotive seat occupant Download PDF

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Publication number
US4413841A
US4413841A US06/277,802 US27780281A US4413841A US 4413841 A US4413841 A US 4413841A US 27780281 A US27780281 A US 27780281A US 4413841 A US4413841 A US 4413841A
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US
United States
Prior art keywords
seat
belt
projecting member
door
vehicle
Prior art date
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Expired - Fee Related
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US06/277,802
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English (en)
Inventor
Hideoki Matsuoka
Yoshinobu Kondoh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nissan Motor Co Ltd
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Nissan Motor Co Ltd
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Publication date
Application filed by Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Assigned to NISSAN MOTOR COMPANY, LIMITED reassignment NISSAN MOTOR COMPANY, LIMITED ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: KONDOH, YOSHINOBU, MATUOKA, HIDEOKI
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Publication of US4413841A publication Critical patent/US4413841A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/04—Passive restraint systems, i.e. systems both applied and removed automatically, e.g. by movement of the vehicle door

Definitions

  • the present invention relates to a safety seat belt arrangement for protecting the occupant of an automotive seat and particularly to a safety seat belt arrangement wherein a seat belt loosening means is provided such that the occupant-restraining seat belt assembly can immediately be displaced away from the body of an occupant in response to the opening of the door.
  • a conventional safety seat belt arrangement comprises: (a) a first belt divided into a shoulder harness portion and lap harness portion by means of a pivot ring, one end of the shoulder harness portion fixed on the rear upper corner of a door inside panel and one end of the lap harness portion fixed on the rear lower corner; (b) a second belt, one end retractable into a seat belt retractor and the other end secured to the pivot ring; (c) an arm as a seat belt guide means for supporting the second belt; and (d) a linkage member for linking one end of the arm with the radially inward front lower corner of the inside door panel.
  • a safety seat belt arrangement for an automotive seat occupant wherein a projecting rod, connected to a wire connected in turn to a swinging arm as a seat belt guide means, is provided at the rear outside part of the seat so as to be pushed toward the seat when the corresponding door is closed and an elastic means is provided for biasing the projecting rod in the direction away from the seat, and whereby the projecting rod is projected and simultaneously the biasing force of the elastic means causes the arm as a seat belt guide means to be tilted, thus reducing the force required to open the door.
  • FIG. 1 is a perspective view of a conventional seat belt arrangement in an automotive vehicle
  • FIG. 2 is a perspective view of a seat belt arrangement of a first preferred embodiment according to the present invention
  • FIG. 3 is an exploded perspective view of the first preferred embodiment of the present invention.
  • FIG. 4 is a simplified side view as seen from an adjacent seat in a part B and from a rear seat in a part C of the first preferred embodiment according to the present invention with the door closed;
  • FIG. 5 is a simplified side view as seen from the adjacent seat in the part B and from the rear seat in the part C of the first preferred embodiment according to the present invention with the door opened;
  • FIG. 6 is an exploded perspective view of a second preferred embodiment according to the present invention.
  • FIG. 7 is a side view as seen from the adjacent seat in the part B and from the rear seat in the part C of the second preferred embodiment in the assembled state;
  • FIG. 8 is a perspective view of a third preferred embodiment according to the present invention.
  • FIG. 9 is a perspective view of the third preferred embodiment according to the present invention.
  • FIG. 1 shows a conventional safety seat belt arrangement mounted in an automotive vehicle.
  • the conventional safety seat belt arrangement comprises a first belt 3 whose one end of a shoulder harness portion 3b is attached to the rear upper portion of an inside door panel 1 and the other end of a lap harness portion 3a to the rear lower portion of the inside door panel 1 by means of an anchor 2, a second belt 5 with one end connected to the first belt 3 through a pivot ring 4, a safety belt retractor 6 which performs reeling out or retraction of the other end of the second belt 5, an arm 7 which serves as a belt guide means for supporting the second belt 5, a linkage member 8 whose one end 8b is attached to the front lower corner of the inside door panel 1 and the other end 8a to one end 7a of the arm 7 so that the arm 7 stands upright from the seat cushion 14 and tilts as the inside door panel 1 is opened and closed, driven by the door-opening or closing force.
  • FIG. 2 shows a first preferred embodiment of the safety seat belt arrangement according to the present invention.
  • an emergency release buckle 9 attached to one end of the shoulder harness portion 3b of the first belt 3 is secured to a door sash anchor 10 provided at a sash portion 1a of the rear upper corner of the inside door panel 1.
  • the first belt 3 is inserted through a hole of the pivot ring 4, the second belt 5 attached through the other hole of the pivot ring 4.
  • the first belt 3 and one end of the second belt 5 are linked together at the pivot ring 4 so that the first belt is slidably adjustable.
  • the other end of the second belt 5 is retracted into the belt retractor 6.
  • the belt retractor 6 locks the second belt 5 by sensing an acceleration or deceleration of the automotive vehicle in case of emergency at the time of collision.
  • the arm 7 serves as a seat belt guide means for supporting the second belt 5.
  • One end of the arm 7 is provided with a second pivot ring 11 through which the second belt 5 passes and the other end thereof is rotatably fixed on a first axle 12 provided on a seat frame bracket 13 and restrained by the snap ring 26.
  • a first coil spring 40 of spring constant K 1 provided on the first axle 2, with one end fixed to the first axle 12 and the other end fixed to the arm 7, urges the arm 7 toward the tilted position.
  • the arm 7 stands upright the arm 7 lifts the second belt 5 to a predetermined height h above the upper surface of the seat cushion 14 and in the tilted state the second belt 3 is lowered.
  • one end of the wire 15 is provided with a lug 16.
  • This end of the wire 15 is connected with the arm 7 by fitting the lug 16 onto a second axle 17 projecting from the lower end of the arm 7.
  • the lug 16 is retained on the second axle 17 by the snap ring 27.
  • the wire 15 passes rearward to a pulley 41 which is rotatably fixed to the seat frame bracket 13 at the rear inboard corner of the seat cushion 14.
  • the pulley 41 guides the wire 15 around the corner of the seat cushion 14 so that the wre 15 leads outboard toward the inside door panel 1.
  • the wire 15 passes through hole in tab 13a provided in the seat frame bracket 13 and through a second coil spring 20 of spring constant K 2 >K 1 , and is secured to a stop 21 in the form of a disc. Movement of the second coil spring 20 is restrained by the tab 13a and the stop 21.
  • a bracket 22 fixed at the rear of the frame of seat cushion 14 restrains the movement of the stop 21. The range of movement of stop 21 will be seen later in the disclosure to determine the range of rotation of the arm 7.
  • a guide sleeve 23 is positioned between the bracket 22 and the body wall 19. The ends of the guide sleeve 23 pass through holes provided in the bracket 22 and body wall 19, and are secured by the nuts 24 and 25 respectively.
  • a recess can be provided in the body wall 19 for the nut 25 and a hexagon nut 19b to permit the door 1 to fit flush with the body wall 19.
  • a rod 18 passes through the guide sleeve 23, with one end secured to the stop 21, and the other end passing through a hole 19a in the body wall 19 and being rounded to form a plunger.
  • the first preferred embodiment shown in FIG. 3 comprises the above-described construction.
  • the operation of the first preferred embodiment can be understood by reference to FIGS. 4 and 5.
  • the plunger end of the rod 18 is free to slide out through the hole 19a in the body wall 19.
  • the second coil spring 20 is thus allowed to expand, pushing the stop 21 to its limit at the bracket 22.
  • the wire 15 in turn pulls on the second axle 17 so that the arm 7 is tilted to the full-upright position.
  • the second belt 5 is lifted up and away from the occupant, facilitating movement into and out of the seat.
  • FIGS. 6 and 7 show a second preferred embodiment of the seat belt arrangement according to the present invention.
  • a rack 28 is provided at one end of the wire 15.
  • the rack 28 is engaged with the gear teeth 29 provided at the lower end of the arm 7 so that the arm 7 is rotated about the axle 12.
  • FIGS. 8 and 9 show a third preferred embodiment of the seat belt arrangement according to the present invention.
  • One end of the wire 15 is provided with a shaft 30 forming a hook 30a at one end of a seat side thereof.
  • the hook 30a is fitted into a hole provided at one end 17 of the arm 7 so that one end of the wire 15 is connected with the arm 7.
  • a shaft 30' provided at the other end of the wire 15 is fitted into a hole 32 of another arm 31 which rotates by means of the inside door panel 1 on an axle 34 projecting from a base plate 33, and which is restrained by means of a snap ring 36.
  • the arm 31 is biased toward the inside door panel 1 by means of a third coil spring 35 on axle 34.
  • a snap ring 26 holds the arm 7 onto the axle 12 of the seat frame bracket 13.
  • Numerals 27 and 37 denote snap ring retainers for the shafts 30 and 30'.
  • the operation of the third preferred embodiment shown in FIGS. 8 and 9 differs slightly from that of the first two preferred embodiments.
  • the torsional action of the third coil spring 35 having spring constant K 3 >K 1 , analogously replaces the linear action of the second spring 20 shown in the first and second preferred embodiments.
  • the force of the third coil spring 35 is delivered solely through the wire 15, as compared to the rod 18-to-wire 15 system in the first and second preferred embodiments.
  • the interaction of the inside door panel 1 and the arm 7 remains the same as in the first two preferred embodiments.
  • the projecting rod pushed inward when the door is closed and elastic means for biasing the projecting rod toward the projecting direction, whereby the elastic means causes the seat belt guide means to be actuated simultaneously when the projecting rod is projected during the opening of the door. Consequently, the door can be opened with greater ease than in the prior art system.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automotive Seat Belt Assembly (AREA)
US06/277,802 1980-06-27 1981-06-26 Safety seat belt arrangement for automotive seat occupant Expired - Fee Related US4413841A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP55-90974[U] 1980-06-27
JP1980090974U JPS5713356U (US06373033-20020416-M00071.png) 1980-06-27 1980-06-27

Publications (1)

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US4413841A true US4413841A (en) 1983-11-08

Family

ID=14013477

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/277,802 Expired - Fee Related US4413841A (en) 1980-06-27 1981-06-26 Safety seat belt arrangement for automotive seat occupant

Country Status (2)

Country Link
US (1) US4413841A (US06373033-20020416-M00071.png)
JP (1) JPS5713356U (US06373033-20020416-M00071.png)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4597587A (en) * 1983-11-28 1986-07-01 Toyota Jidosha Kabushiki Kaisha Seatbelt system
US4643449A (en) * 1984-08-23 1987-02-17 Honda Giken Kogyo Kabushiki Kaisha Bendable reach arm for a seat belt
US4730874A (en) * 1985-09-03 1988-03-15 Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho Seat for vehicle

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3827714A (en) * 1971-11-10 1974-08-06 Peugeot & Renault Automatic tensioning and release devices for automotive safety harnesses
US4084841A (en) * 1971-02-11 1978-04-18 Toyota Jidosha Kogyo Kabushiki Kaisha Automatic seat belt applying device
US4213637A (en) * 1977-12-15 1980-07-22 Automobiles Peugeot Passive safety belt for an automobile vehicle
US4262933A (en) * 1979-10-29 1981-04-21 Allied Chemical Corporation Passive seat belt system with dampening means
US4324418A (en) * 1980-03-26 1982-04-13 Allied Corporation Passive seat belt system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49925A (US06373033-20020416-M00071.png) * 1972-04-18 1974-01-07

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4084841A (en) * 1971-02-11 1978-04-18 Toyota Jidosha Kogyo Kabushiki Kaisha Automatic seat belt applying device
US3827714A (en) * 1971-11-10 1974-08-06 Peugeot & Renault Automatic tensioning and release devices for automotive safety harnesses
US4213637A (en) * 1977-12-15 1980-07-22 Automobiles Peugeot Passive safety belt for an automobile vehicle
US4262933A (en) * 1979-10-29 1981-04-21 Allied Chemical Corporation Passive seat belt system with dampening means
US4324418A (en) * 1980-03-26 1982-04-13 Allied Corporation Passive seat belt system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4597587A (en) * 1983-11-28 1986-07-01 Toyota Jidosha Kabushiki Kaisha Seatbelt system
US4643449A (en) * 1984-08-23 1987-02-17 Honda Giken Kogyo Kabushiki Kaisha Bendable reach arm for a seat belt
US4730874A (en) * 1985-09-03 1988-03-15 Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho Seat for vehicle

Also Published As

Publication number Publication date
JPS5713356U (US06373033-20020416-M00071.png) 1982-01-23

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